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Canadian Climate Normals 1991-2020 Data

Temperature and Precipitation Graph

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Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate Normals
WHITEHORSE

Symbol	Description
	Daily Maximum Temperature (°C)
	Daily Average Temperature (°C)
	Daily Minimum Temperature (°C)
	Precipitation (mm)

Normals Data

The minimum number of years used to calculate these Normals is indicated by a code for each element. A "+" beside an extreme date indicates that this date is the first occurrence of the extreme value. Values and dates in bold indicate all-time extremes at the location for that reporting period. Normal period extremes (NPE) are calculated for the 30-year normal period, whereas long-term extremes (LTE) extend further back in time to the earliest date available in the data series.

Data used in the calculation of these Normals may be subject to further quality assurance checks. This may result in minor changes to some values presented here.

WHITEHORSE
YUKON TERRITORY

Temperature

1991 to 2020 Canadian Climate Normals Data
Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Daily Average (°C)	-15.0	-11.9	-6.7	1.6	7.9	12.8	14.5	12.9	7.5	0.8	-8.6	-12.8	0.2	A
Standard Deviation	4.5	4.5	3.4	1.9	1.5	1.2	1.0	1.3	1.5	1.7	4.0	4.3	1.6	A
Daily Maximum (°C)	-11.1	-7.1	-1.1	7.1	14.2	19.3	20.5	18.5	12.3	4.3	-5.4	-9.1	5.2	A
Daily Minimum (°C)	-18.9	-16.6	-12.4	-4.0	1.6	6.2	8.5	7.2	2.7	-2.8	-11.8	-16.5	-4.7	A

1991 to 2020 Canadian Climate Normals Data
Temperature Extremes (Normal Period)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Maximum Daily Mean (°C)	6.9	7.3	8.5	12.2	18.9	23.9	22.6	23.1	18.9	13.1	6.3	7.2
Date (yyyy/dd)	2009/ 18	1992/ 26	2019/ 22	2003/ 25	2008/ 25	2004/ 23	2009/ 30	1994/ 09	2017/ 05	2003/ 01	2002/ 27	1999/ 23
Minimum Daily Mean (°C)	-44.2	-37.5	-31.0	-16.5	-6.4	4.3	7.2	2.9	-4.2	-14.6	-35.2	-42.5
Date (yyyy/dd)	2005/ 13	2008/ 01	2007/ 01	2003/ 01	2002/ 03	2008/ 09	2008/ 09	2015/ 29	2000/ 30	1991/ 28+	2006/ 26	1992/ 28
Extreme Maximum (°C)	10.0	11.5	16.8	21.8	28.8	33.2	33.2	31.6	24.8	19.3	10.8	10.6
Date (yyyy/dd)	2009/ 18	1992/ 26	2016/ 31	2002/ 30	1998/ 28	2004/ 21	2009/ 30	1999/ 05	1993/ 01	2003/ 03	2002/ 26	2004/ 23
Minimum Daily Maximum (°C)	-42.6	-32.4	-24.8	-10.2	-1.1	7.4	10.8	4.0	-2.3	-12.2	-32.7	-40.6
Date (yyyy/dd)	1991/ 03	2008/ 08	2007/ 01	2003/ 01	2002/ 02	2008/ 09	2012/ 02	2015/ 29	2000/ 30	1992/ 18	2006/ 26	1992/ 28
Maximum Daily Minimum (°C)	3.7	3.1	4.6	5.1	11.3	15.4	17.2	17.1	14.3	10.2	3.0	5.2
Date (yyyy/dd)	2009/ 18	1992/ 26	2019/ 18	2010/ 26+	2019/ 28	2004/ 23	1999/ 14	1994/ 09	2013/ 07	2003/ 04	2005/ 17	1999/ 23
Extreme Minimum (°C)	-46.6	-44.4	-37.8	-26.9	-12.9	-5.7	-0.1	-2.8	-7.8	-21.1	-41.0	-45.1
Date (yyyy/dd)	2005/ 13	2008/ 09	2007/ 04	2002/ 01	2002/ 03	2012/ 04	1999/ 29	1998/ 30	1992/ 13	1991/ 28	2006/ 27	1992/ 29

1991 to 2020 Canadian Climate Normals Data
Temperature Extremes (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Maximum Daily Mean (°C)	6.9	8.4	8.5	12.2	23.7	23.9	22.8	23.1	18.9	13.4	7.5	7.2
Date (yyyy/dd)	2009/ 18	1968/ 27	2019/ 22	2003/ 25	1983/ 30	2004/ 23	1958/ 05	1994/ 09	2017/ 05	1958/ 01	1970/ 02	1999/ 23
Minimum Daily Mean (°C)	-48.1	-47.5	-31.7	-20.3	-6.4	3.3	5.6	0.8	-9.6	-24.2	-37.3	-44.5
Date (yyyy/dd)	1947/ 31	1947/ 02	1972/ 08	1944/ 01	2002/ 03	1955/ 03	1945/ 06	1984/ 28	1983/ 27	1975/ 31	1948/ 27	1977/ 09
Extreme Maximum (°C)	10.0	11.7	16.8	21.8	34.1	34.4	33.2	31.6	26.7	19.3	11.7	10.6
Date (yyyy/dd)	2009/ 18	1968/ 27	2016/ 31	2002/ 30	1983/ 30	1969/ 14	2009/ 30	1999/ 05	1942/ 03	2003/ 03	1970/ 02	2004/ 23
Minimum Daily Maximum (°C)	-43.9	-44.4	-24.8	-15.0	-1.1	6.7	7.2	2.7	-5.4	-20.0	-33.9	-42.7
Date (yyyy/dd)	1947/ 31+	1947/ 02	2007/ 01	1944/ 01	2002/ 02	1943/ 07	1950/ 27	1984/ 27	1983/ 26	1975/ 31	1948/ 27	1977/ 09
Maximum Daily Minimum (°C)	3.7	5.0	4.6	5.6	13.3	17.2	17.2	17.1	14.3	10.2	4.4	5.2
Date (yyyy/dd)	2009/ 18	1968/ 27	2019/ 18	1953/ 28	1983/ 30	1969/ 16	1999/ 14	1994/ 09	2013/ 07	2003/ 04	1956/ 28+	1999/ 23
Extreme Minimum (°C)	-52.2	-51.2	-40.6	-29.4	-12.9	-5.7	-0.5	-4.4	-19.4	-31.1	-41.0	-47.8
Date (yyyy/dd)	1947/ 31	1968/ 02+	1972/ 08	1986/ 10	2002/ 03	2012/ 04	1984/ 19	1948/ 25	1983/ 27	1982/ 28	2006/ 27	1942/ 19

Precipitation

1991 to 2020 Canadian Climate Normals Data
Precipitation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Rainfall (mm)	0.1	0.0	0.0	1.2	12.9	34.4	37.5	40.4	26.8	9.9	0.9	0.2	164.3	D
Snowfall (cm)	28.8	18.3	16.1	7.0	2.8	0.2	0.0	0.0	3.6	17.2	28.4	25.3	147.6	D
Precipitation (mm)	22.3	14.7	11.5	8.4	15.4	35.2	39.2	39.0	30.9	23.1	23.5	16.4	279.6	C
Average Snow Depth (cm)	23	27	25	6						1	11	17
Median Snow Depth (cm)	22	27	25	5						0	11	17
Snow Depth at Month-end (cm)	26	26	19	2				0	0	4	15	20

1991 to 2020 Canadian Climate Normals Data
Precipitation Extremes (Normal Period)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Daily Rainfall (mm)	0.7	1.8	0.0	3.1	12.6	28.8	23.2	23.9	15.2	12.0	6.0	1.4
Date (yyyy/dd)	2009/ 20	2012/ 03	1991/ 01+	1992/ 17+	2000/ 26	2010/ 30	1991/ 27	2001/ 04	1994/ 12	1998/ 20	2010/ 04	2011/ 05
Extreme Daily Snowfall (cm)	13.5	14.2	15.2	16.6	10.1	2.8	0.0	0.0	14.9	15.0	14.2	18.0
Date (yyyy/dd)	2003/ 19	2009/ 07	2009/ 12	2006/ 14	2012/ 16	2008/ 08	1991/ 01+	1991/ 27+	2010/ 24	1999/ 23	2010/ 20	2011/ 05
Extreme Daily Precipitation (mm)	16.2	17.9	10.3	15.8	12.6	28.8	30.9	23.9	18.9	20.5	21.3	14.1
Date (yyyy/dd)	2015/ 21	2020/ 10	2018/ 20	2006/ 14	2000/ 26	2010/ 30	2014/ 04	2001/ 04	2014/ 05	2018/ 14	2020/ 02	2011/ 05
Extreme Snow Depth (cm)	50	52	51	50	30	0	0	0	18	17	40	53
Date (yyyy/dd)	2013/ 30+	2013/ 23+	2007/ 17+	2020/ 09	2013/ 01+	1991/ 01+	1991/ 01+	1991/ 01+	1992/ 16+	2019/ 06+	2020/ 03	2013/ 29+

1991 to 2020 Canadian Climate Normals Data
Precipitation Extremes (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Daily Rainfall (mm)	3.4	1.8	0.8	4.4	12.6	44.9	23.2	30.7	24.6	18.3	9.4	4.2
Date (yyyy/dd)	1981/ 03	2012/ 03	1944/ 15	1983/ 30	2000/ 26	1985/ 27	1991/ 27	1948/ 01	1983/ 04	1970/ 02	1949/ 03	1981/ 18
Extreme Daily Snowfall (cm)	14.0	16.7	27.2	16.6	12.2	12.7	0.0	8.6	21.6	15.0	14.6	27.0
Date (yyyy/dd)	1968/ 03	1982/ 09	1967/ 08	2006/ 14	1942/ 04	1972/ 01	1942/ 01+	1974/ 22	1956/ 27	1999/ 23	1978/ 23	1980/ 25
Extreme Daily Precipitation (mm)	16.2	17.9	10.4	15.8	12.6	44.9	30.9	30.7	25.2	23.6	21.3	18.7
Date (yyyy/dd)	2015/ 21	2020/ 10	1962/ 07	2006/ 14	2000/ 26	1985/ 27	2014/ 04	1948/ 01	1986/ 23	1970/ 02	2020/ 02	1980/ 25
Extreme Snow Depth (cm)	86	94	94	66	38	0	0	3	20	21	52	69
Date (yyyy/dd)	1972/ 30+	1972/ 16+	1972/ 01+	1967/ 13+	1972/ 01	1955/ 01+	1955/ 01+	1969/ 11	1956/ 28+	1982/ 31	1978/ 25	1980/ 29

Days With ...

1991 to 2020 Canadian Climate Normals Data
Days With ...
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Freezing Rain or Freezing Drizzle	0.14	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.07	0.29	0.28	0.21	0.99	A
Thunderstorms	0.0	0.11	0.0	0.0	0.33	1.9	1.9	0.46	0.11	0.07	0.0	0.03	4.9	A
Hail	0.0	0.0	0.0	0.0	0.07	0.04	0.14	0.04	0.0	0.0	0.0	0.0	0.29	A
Fog, Ice Fog, or Freezing Fog	2.2	0.64	0.07	0.11	0.04	0.29	0.29	0.50	1.1	1.1	1.7	1.3	9.3	A
Smoke or Haze	0.0	0.04	0.0	0.07	0.22	0.64	1.2	1.4	0.04	0.0	0.07	0.07	3.7	A

Days with Maximum Temperature

1991 to 2020 Canadian Climate Normals Data
Days with Maximum Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
<= -30 °C	1.6	0.16	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.08	0.46	2.3	C
<= -20 °C	6.2	3.0	0.20	0.0	0.0	0.0	0.0	0.0	0.0	0.0	1.2	4.7	15.2	C
<= -10 °C	15.3	9.6	3.4	0.04	0.0	0.0	0.0	0.0	0.0	0.04	7.4	13.4	49.2	C
<= 0 °C	26.4	22.2	14.1	2.1	0.05	0.0	0.0	0.0	0.16	5.0	22.9	25.9	118.7	C
> 0 °C	4.6	6.1	16.9	27.9	31.0	30.0	31.0	31.0	29.8	26.0	7.2	5.1	246.5	C
> 10 °C	0.0	0.04	0.52	7.3	25.0	29.7	31.0	30.4	22.4	3.2	0.08	0.04	149.7	C
> 20 °C	0.0	0.0	0.0	0.19	2.9	11.8	16.6	10.0	0.76	0.0	0.0	0.0	42.2	C
> 30 °C	0.0	0.0	0.0	0.0	0.0	0.43	0.25	0.19	0.0	0.0	0.0	0.0	0.87	C
> 35 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C
> 40 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C

Days with Minimum Temperature

1991 to 2020 Canadian Climate Normals Data
Days with Minimum Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
> 20 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C
> 10 °C	0.0	0.0	0.0	0.0	0.16	2.9	8.6	6.2	0.69	0.04	0.0	0.0	18.5	C
> 0 °C	0.43	0.35	0.68	5.2	19.9	29.4	31.0	30.4	21.9	8.9	0.74	0.62	149.5	C
<= 2 °C	30.8	28.1	30.7	28.4	17.9	3.1	0.15	2.5	12.9	27.3	29.8	30.9	242.6	C
<= 0 °C	30.6	27.9	30.3	24.8	11.1	0.63	0.04	0.65	8.1	22.1	29.3	30.4	215.8	C
< -2 °C	29.6	27.1	28.0	18.4	4.8	0.0	0.0	0.04	3.5	15.2	27.4	29.7	183.7	C
< -10 °C	23.7	20.7	15.6	3.0	0.12	0.0	0.0	0.0	0.0	2.8	16.1	22.6	104.5	C
< -20 °C	13.6	10.2	6.2	0.56	0.0	0.0	0.0	0.0	0.0	0.08	4.3	10.2	45.2	C
< -30 °C	5.4	2.6	0.84	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.63	3.5	13.0	C
< -40 °C	1.0	0.15	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.04	0.27	1.5	C

Days with Rainfall

1991 to 2020 Canadian Climate Normals Data
Days with Rainfall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 mm	0.17	0.06	0.0	1.1	6.9	10.8	13.0	12.3	11.6	5.4	0.88	0.37	62.7	D
>= 5 mm	0.0	0.0	0.0	0.0	0.72	2.1	2.4	3.1	1.4	0.47	0.0	0.0	10.2	D
>= 10 mm	0.0	0.0	0.0	0.0	0.17	0.68	0.72	0.75	0.44	0.11	0.0	0.0	2.9	D
>= 25 mm	0.0	0.0	0.0	0.0	0.0	0.16	0.0	0.0	0.0	0.0	0.0	0.0	0.16	D
>= 50 mm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	D
>= 100 mm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	D

Days with Snowfall

1991 to 2020 Canadian Climate Normals Data
Days with Snowfall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 cm	12.4	8.8	7.6	3.4	1.4	0.05	0.0	0.0	1.5	7.1	11.9	12.1	66.2	D
>= 5 cm	1.7	1.1	1.1	0.39	0.28	0.0	0.0	0.0	0.22	1.1	1.5	1.3	8.6	D
>= 10 cm	0.28	0.12	0.12	0.06	0.06	0.0	0.0	0.0	0.06	0.16	0.21	0.21	1.3	D
>= 25 cm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	D
>= 40 cm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	D

Days with Precipitation

1991 to 2020 Canadian Climate Normals Data
Days with Precipitation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 mm	12.7	9.2	7.2	5.1	7.3	11.1	13.0	12.0	12.2	10.7	13.0	11.3	124.7	C
>= 1 mm	6.3	4.7	3.8	2.8	3.7	6.8	8.4	7.9	7.0	6.3	7.0	5.9	70.4	C
>= 5 mm	0.88	0.46	0.43	0.36	1.1	2.1	2.5	2.9	1.7	1.0	0.92	0.43	14.8	C
>= 10 mm	0.15	0.13	0.0	0.04	0.17	0.77	0.76	0.81	0.68	0.25	0.12	0.09	4.0	C
>= 25 mm	0.0	0.0	0.0	0.0	0.0	0.18	0.08	0.0	0.0	0.0	0.0	0.0	0.26	C
>= 50 mm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C
>= 100 mm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C

Days with Snow Depth

1991 to 2020 Canadian Climate Normals Data
Days with Snow Depth
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 1 cm	31.0	28.2	28.9	11.9						7.1	28.2	30.3
>= 5 cm	31.0	28.2	28.6	8.7						3.5	23.9	29.0
>= 10 cm	30.7	27.4	25.5	7.0						1.6	15.0	24.4
>= 20 cm	17.8	20.8	19.5	5.1						0.0	4.5	9.8
>= 30 cm	4.5	11.0	13.7	1.6						0.0	0.80	2.9
>= 50 cm	0.05	0.65	1.8	0.0						0.0	0.0	0.0
>= 100 cm	0.0	0.0	0.0	0.0						0.0	0.0	0.0

Wind

1991 to 2020 Canadian Climate Normals Data
Wind
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Speed (km/h)	11.3	11.9	11.8	11.4	11.4	10.1	9.8	10.1	11.8	12.2	12.3	12.5	11.4	A
Most Frequent Direction	S	S	S	S	S	S	S	S	S	S	S	S	S	A
Days with Winds >= 52 km/h	0.60	0.40	0.42	0.15	0.0	0.06	0.0	0.10	0.43	0.63	0.55	0.50	3.8	D
Days with Winds >= 63 km/h	0.05	0.15	0.05	0.05	0.0	0.0	0.0	0.0	0.05	0.05	0.05	0.0	0.45	D
Days with Gusts >= 90 km/h	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.05	0.04	0.0	0.09	D

1991 to 2020 Canadian Climate Normals Data
Wind Extremes (Normal Period)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Speed (km/h)	65	65	56	56	48	44	41	52	56	56	65	56
Date (yyyy/dd)	1993/ 28	2011/ 01	2001/ 11+	1999/ 01	2002/ 02	1994/ 01+	1999/ 03+	1998/ 29	2012/ 05	2006/ 10	2004/ 03	1994/ 29+
Direction of Extreme Speed	S	S	SW	S	NW	SE	NW	S	S	S	S	S
Extreme Gust Speed (km/h)	82	85	85	67	74	65	74	67	70	95	93	83
Date (yyyy/dd)	1993/ 28	1992/ 27+	2001/ 11	2005/ 18	2001/ 02+	1999/ 13+	1999/ 03	1991/ 03	1991/ 23+	1999/ 19	2009/ 14	2006/ 29
Direction of Extreme Gust Speed	S	S	SW	S	SW	S	N	S	SW	S	S	S

1991 to 2020 Canadian Climate Normals Data
Wind Extremes (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Speed (km/h)	72	68	64	60	64	56	63	52	72	63	68	72
Date (yyyy/dd)	1962/ 09	1957/ 15	1953/ 14+	1966/ 09	1965/ 06	1965/ 16	1959/ 30	1998/ 29	1967/ 17	1961/ 28	1962/ 18	1954/ 17
Direction of Extreme Speed	SE	S	S	N	S	SE	E	S	S	SE	SE	S
Extreme Gust Speed (km/h)	100	106	93	89	85	90	91	84	101	97	106	97
Date (yyyy/dd)	1965/ 17	1964/ 19	1965/ 10	1965/ 16+	1965/ 02	1963/ 26	1982/ 07	1960/ 11+	1967/ 18	1958/ 01	1962/ 18	1960/ 14
Direction of Extreme Gust Speed	S	S	SW	N	S	W	SE	SE	S	S	SE	SE

Degree Days

1991 to 2020 Canadian Climate Normals Data
Degree Days
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Above 24 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C
Above 18 °C	0.0	0.0	0.0	0.0	0.0	3.5	3.5	3.3	0.0	0.0	0.0	0.0	10.4	C
Above 15 °C	0.0	0.0	0.0	0.0	1.1	15.1	22.9	16.2	0.7	0.0	0.0	0.0	55.9	C
Above 10 °C	0.0	0.0	0.0	0.3	18.3	90.1	138.9	95.8	12.6	0.7	0.0	0.0	356.7	C
Above 5 °C	0.1	0.1	1.0	10.6	95.5	232.7	293.3	242.7	90.2	10.1	0.1	0.2	976.6	C
Above 0 °C	2.8	2.8	13.3	80.7	239.1	382.6	448.3	397.5	225.7	68.2	4.9	2.6	1868.5	C
Below 0 °C	467.7	343.6	211.4	32.2	0.9	0.0	0.0	0.0	1.1	45.5	266.2	406.0	1774.7	C
Below 5 °C	620.0	482.0	354.1	112.2	12.4	0.0	0.0	0.3	15.5	142.4	411.5	558.6	2709.0	C
Below 10 °C	774.9	623.1	508.2	251.9	90.1	7.5	0.5	8.3	87.9	288.1	561.4	713.4	3915.3	C
Below 15 °C	929.9	764.3	663.2	401.6	228.0	82.4	39.5	83.7	226.1	442.4	711.4	868.4	5440.8	C
Below 18 °C	1022.9	849.1	756.2	491.6	319.9	160.9	113.1	163.8	315.4	535.4	801.4	961.4	6490.9	C

Quintiles

1991 to 2020 Canadian Climate Normals Data
Quintiles
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Quintile 1 (Lower Bound)	9.1	0.0	0.0	0.0	2.0	8.8	14.2	9.9	5.9	5.9	5.8	3.2
Quintile 1 (Upper Bound)	11.9	6.0	2.2	1.4	5.3	19.8	26.5	22.5	18.1	14.3	12.3	8.3
Quintile 2 (Upper Bound)	20.1	8.7	6.8	3.7	11.6	30.0	31.8	31.9	20.9	18.6	18.6	14.1
Quintile 3 (Upper Bound)	22.9	14.0	15.0	7.4	16.8	38.4	40.4	42.9	28.0	26.3	25.2	17.5
Quintile 4 (Upper Bound)	26.5	23.7	21.8	16.3	22.9	49.1	54.9	54.1	40.2	30.8	31.7	23.1
Quintile 5 (Upper Bound)	44.7	40.6	29.1	29.7	43.6	82.2	65.6	82.1	80.3	42.2	55.8	65.4

Humidex

1991 to 2020 Canadian Climate Normals Data
Humidex
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Days with Humidex >= 30	0.0	0.0	0.0	0.0	0.0	0.28	0.17	0.20	0.0	0.0	0.0	0.0	0.65	A
Days with Humidex >= 35	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	A
Days with Humidex >= 40	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	A

1991 to 2020 Canadian Climate Normals Data
Humidex Extremes (Normal Period)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Humidex	9.5	10.0	16.6	21.6	28.3	32.8	33.6	31.9	24.5	19.0	10.4	9.2
Date (yyyy/dd)	2009/ 18	1992/ 26	2016/ 31	2002/ 30	1998/ 29	2004/ 19	2009/ 29	1994/ 08	2012/ 20	2003/ 03	2002/ 26	2004/ 23

1991 to 2020 Canadian Climate Normals Data
Humidex Extremes (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Humidex	9.5	11.1	16.6	21.6	33.6	33.3	33.6	31.9	25.2	19.0	11.1	9.2
Date (yyyy/dd)	2009/ 18	1968/ 27	2016/ 31	2002/ 30	1983/ 30	1969/ 14+	2009/ 29	1994/ 08	1974/ 01	2003/ 03	1970/ 02	2004/ 23

Wind Chill

1991 to 2020 Canadian Climate Normals Data
Wind Chill
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Days with Wind Chill < -20	18.5	13.9	10.7	0.80	0.0	0.0	0.0	0.0	0.0	0.93	9.5	16.7	71.0	A
Days with Wind Chill < -30	9.6	6.2	3.0	0.03	0.0	0.0	0.0	0.0	0.0	0.0	2.4	7.0	28.3	A
Days with Wind Chill < -40	3.7	1.2	0.21	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.27	1.5	6.9	A
Days with Wind Chill < -50	0.70	0.10	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.03	0.07	0.90	A

1991 to 2020 Canadian Climate Normals Data
Wind Chill Extremes (Normal Period)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Wind Chill	-55.7	-51.0	-46.5	-31.3	-17.2	-6.8	0.0	-4.2	-12.6	-45.3	-51.4	-54.9
Date (yyyy/dd)	1996/ 20	2008/ 08	2007/ 04	1996/ 02	2002/ 04	2015/ 26	1991/ 01+	2000/ 27	1992/ 16	2014/ 12	2006/ 27	1992/ 29

1991 to 2020 Canadian Climate Normals Data
Wind Chill Extremes (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Wind Chill	-61.3	-62.4	-47.5	-35.0	-18.6	-6.8	0.0	-6.4	-21.4	-45.3	-51.4	-59.2
Date (yyyy/dd)	1965/ 04	1968/ 03	1955/ 03	1963/ 03	1964/ 09	2015/ 26	1953/ 01+	1969/ 11	1983/ 27	2014/ 12	2006/ 27	1964/ 15

Humidity

1991 to 2020 Canadian Climate Normals Data
Humidity
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Average Vapour Pressure (kPa)	0.2	0.2	0.3	0.4	0.5	0.8	1.0	0.9	0.7	0.5	0.3	0.2	0.5	A
Average Relative Humidity - 0600LST (%)	76.8	76.4	72.6	71.9	69.0	71.0	76.4	80.5	81.3	81.2	80.4	78.5	76.3	A
Average Relative Humidity - 1500LST (%)	74.9	65.9	49.7	40.2	36.2	40.0	46.3	48.2	54.0	64.9	77.1	77.8	56.3	A

Pressure

1991 to 2020 Canadian Climate Normals Data
Pressure
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Average Station Pressure (kPa)	92.6	92.8	92.7	92.7	93.0	93.0	93.2	93.1	92.8	92.5	92.4	92.4	92.8	A
Average Sea Level Pressure (kPa)	101.4	101.5	101.3	101.2	101.4	101.3	101.5	101.4	101.2	101.1	101.1	101.1	101.3	A

Visibility (hours with)

1991 to 2020 Canadian Climate Normals Data
Visibility (hours with)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
< 1 km	26.4	2.3	0.6	0.3	0.1	0.6	0.5	1.2	2.1	2.8	6.0	5.8	48.7	A
1 to 9 km	98.3	58.9	53.1	16.5	8.8	10.5	12.3	19.0	20.0	62.4	119.2	85.4	564.2	A
> 9 km	619.0	617.2	689.3	702.9	734.9	708.7	730.3	723.3	697.3	678.2	594.1	652.2	8147.2	A

Cloud Amount (hours with)

1991 to 2020 Canadian Climate Normals Data
Cloud Amount (hours with)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
0 to 2 tenths	144.3	148.7	187.5	178.6	131.8	102.2	87.9	120.7	97.8	100.9	99.3
3 to 7 tenths	156.6	163.1	177.1	211.5	237.2	234.1	240.0	197.3	172.3	160.7	131.2
8 to 10 tenths	443.1	367.3	379.5	329.9	375.0	383.8	416.1	426.1	449.9	482.4	489.5

Frost-Free

1991 to 2020 Canadian Climate Normals Data
Frost-Free
	Date/Days	Code
Average Date of Last Spring Frost	Jun 03	D
Average Date of First Fall Frost	Aug 28	D
Average Length of Frost-Free Period	85 Days	D

1991 to 2020 Canadian Climate Normals Data
Frost-Free
	10%	25%	33%	50%	66%	75%	90%
Probability of last temperature in spring <= 0°C, on or after (Date)	Jun 22	Jun 15	Jun 10	Jun 04	Jun 02	May 28	May 22
Probability of first temperature in fall <= 0°C, on or before (Date)	Aug 11	Aug 22	Aug 25	Aug 30	Sep 03	Sep 04	Sep 14
Probability of frost-free period equal to or less than indicated period (Days)	61	68	76	85	91	96	103

Legend

A = WMO "3 and 5 rule" (i.e. no more than 3 consecutive and no more than 5 total missing for either temperature or precipitation)
B = At least 25 years
C = At least 20 years

D = At least 15 years
+ = Most recent occurrence of the extreme value

Element Analytics

Statistics listed below are provided as a guide to determine the validity of Normals and Extremes calculations. For example, a composite station with 30 years of record between 1991 and 2020 with no missing years would be a more reliable normal than a composite station with 15 years of record and 2 missing years. Less than 100% possible observations indicates that out of the total number of observations used, some records were missing.

WHITEHORSE
YUKON TERRITORY

Temperature

1991 to 2020 Canadian Climate Normals Element Analytics
Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Daily Average (°C)	1991	2020	29	3	9994	97.4
Standard Deviation	1991	2020	29	3	9994	97.4
Daily Maximum (°C)	1991	2020	29	3	9995	97.4
Daily Minimum (°C)	1991	2020	29	3	10040	97.9

1991 to 2020 Canadian Climate Normals Element Analytics
Temperature Extremes (Normal Period)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Maximum Daily Mean (°C)	1991	2020			10116	98.6
Minimum Daily Mean (°C)	1991	2020			10116	98.6
Extreme Maximum (°C)	1991	2020			10122	98.7
Minimum Daily Maximum (°C)	1991	2020			10122	98.7
Maximum Daily Minimum (°C)	1991	2020			10137	98.8
Extreme Minimum (°C)	1991	2020			10137	98.8

1991 to 2020 Canadian Climate Normals Element Analytics
Temperature Extremes (Long-Term)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Maximum Daily Mean (°C)	1942	2020			27922	99.5
Minimum Daily Mean (°C)	1942	2020			27922	99.5
Extreme Maximum (°C)	1942	2020			27929	99.5
Minimum Daily Maximum (°C)	1942	2020			27929	99.5
Maximum Daily Minimum (°C)	1942	2020			27943	99.6
Extreme Minimum (°C)	1942	2020			27943	99.6

Precipitation

1991 to 2020 Canadian Climate Normals Element Analytics
Precipitation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Rainfall (mm)	1991	2012	20	3	6549	91.1
Snowfall (cm)	1991	2012	20	3	6730	93.6
Precipitation (mm)	1991	2020	27	4	8889	88
Average Snow Depth (cm)	1991	2020	27	9	6892	68.4
Median Snow Depth (cm)	1991	2020	27	9	6892	68.4
Snow Depth at Month-end (cm)	1991	2020	28	9	245	73.8

1991 to 2020 Canadian Climate Normals Element Analytics
Precipitation Extremes (Normal Period)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Daily Rainfall (mm)	1991	2012			7101	98.8
Extreme Daily Snowfall (cm)	1991	2012			7112	99
Extreme Daily Precipitation (mm)	1991	2020			10007	99
Extreme Snow Depth (cm)	1991	2020			7487	74.3

1991 to 2020 Canadian Climate Normals Element Analytics
Precipitation Extremes (Long-Term)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Daily Rainfall (mm)	1942	2012			24907	99.7
Extreme Daily Snowfall (cm)	1942	2012			24918	99.7
Extreme Daily Precipitation (mm)	1942	2020			27814	99.6
Extreme Snow Depth (cm)	1955	2020			20636	88.8

Days With ...

1991 to 2020 Canadian Climate Normals Element Analytics
Days With ...
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Freezing Rain or Freezing Drizzle	1991	2020	29	3	10056	97.8
Thunderstorms	1991	2020	29	3	10055	97.8
Hail	1991	2020	29	3	10055	97.8
Fog, Ice Fog, or Freezing Fog	1991	2020	29	3	10026	97.8
Smoke or Haze	1991	2020	29	3	10025	97.7

Days with Maximum Temperature

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Maximum Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
<= -30 °C	1991	2020	28	5	9100	88.7
<= -20 °C	1991	2020	28	5	9100	88.7
<= -10 °C	1991	2020	28	5	9100	88.7
<= 0 °C	1991	2020	28	5	9100	88.7
> 0 °C	1991	2020	28	5	9100	88.7
> 10 °C	1991	2020	28	5	9100	88.7
> 20 °C	1991	2020	28	5	9100	88.7
> 30 °C	1991	2020	28	5	9100	88.7
> 35 °C	1991	2020	28	5	9100	88.7
> 40 °C	1991	2020	28	5	9100	88.7

Days with Minimum Temperature

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Minimum Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
> 20 °C	1991	2020	28	3	9465	92.3
> 10 °C	1991	2020	28	3	9465	92.3
> 0 °C	1991	2020	28	3	9465	92.3
<= 2 °C	1991	2020	28	3	9465	92.3
<= 0 °C	1991	2020	28	3	9465	92.3
< -2 °C	1991	2020	28	3	9465	92.3
< -10 °C	1991	2020	28	3	9465	92.3
< -20 °C	1991	2020	28	3	9465	92.3
< -30 °C	1991	2020	28	3	9465	92.3
< -40 °C	1991	2020	28	3	9465	92.3

Days with Rainfall

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Rainfall
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 mm	1991	2012	20	3	6549	91.1
>= 5 mm	1991	2012	20	3	6549	91.1
>= 10 mm	1991	2012	20	3	6549	91.1
>= 25 mm	1991	2012	20	3	6549	91.1
>= 50 mm	1991	2012	20	3	6549	91.1
>= 100 mm	1991	2012	20	3	6549	91.1

Days with Snowfall

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Snowfall
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 cm	1991	2012	20	3	6730	93.6
>= 5 cm	1991	2012	20	3	6730	93.6
>= 10 cm	1991	2012	20	3	6730	93.6
>= 25 cm	1991	2012	20	3	6730	93.6
>= 40 cm	1991	2012	20	3	6730	93.6

Days with Precipitation

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Precipitation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 mm	1991	2020	27	4	8889	88
>= 1 mm	1991	2020	27	4	8889	88
>= 5 mm	1991	2020	27	4	8889	88
>= 10 mm	1991	2020	27	4	8889	88
>= 25 mm	1991	2020	27	4	8889	88
>= 50 mm	1991	2020	27	4	8889	88
>= 100 mm	1991	2020	27	4	8889	88

Days with Snow Depth

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Snow Depth
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 1 cm	1991	2020	23	9	6197	61.5
>= 5 cm	1991	2020	23	9	6197	61.5
>= 10 cm	1991	2020	23	9	6197	61.5
>= 20 cm	1991	2020	23	9	6197	61.5
>= 30 cm	1991	2020	23	9	6197	61.5
>= 50 cm	1991	2020	23	9	6197	61.5
>= 100 cm	1991	2020	23	9	6197	61.5

Wind

1991 to 2020 Canadian Climate Normals Element Analytics
Wind
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Speed (km/h)	1991	2020	30	1	261871	99.6
Most Frequent Direction	1991	2020	30	1	258844	99.8
Days with Winds >= 52 km/h	1991	2020	22	8	7182	70
Days with Winds >= 63 km/h	1991	2020	22	8	7182	70
Days with Gusts >= 90 km/h	1991	2018	24	5	8026	78.1

1991 to 2020 Canadian Climate Normals Element Analytics
Wind Extremes (Normal Period)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Speed (km/h)	1991	2020			262537	99.8
Direction of Extreme Speed	1991	2020			262537	99.8
Extreme Gust Speed (km/h)	1991	2020			9482	92.2
Direction of Extreme Gust Speed	1991	2020			9482	92.2

1991 to 2020 Canadian Climate Normals Element Analytics
Wind Extremes (Long-Term)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Speed (km/h)	1953	2020			595628	99.9
Direction of Extreme Speed	1953	2020			595628	99.9
Extreme Gust Speed (km/h)	1956	2020			22163	96.5
Direction of Extreme Gust Speed	1956	2020			22163	96.5

Degree Days

1991 to 2020 Canadian Climate Normals Element Analytics
Degree Days
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Above 24 °C	1991	2020	28	5	9069	88.4
Above 18 °C	1991	2020	28	5	9069	88.4
Above 15 °C	1991	2020	28	5	9069	88.4
Above 10 °C	1991	2020	28	5	9069	88.4
Above 5 °C	1991	2020	28	5	9069	88.4
Above 0 °C	1991	2020	28	5	9069	88.4
Below 0 °C	1991	2020	28	5	9069	88.4
Below 5 °C	1991	2020	28	5	9069	88.4
Below 10 °C	1991	2020	28	5	9069	88.4
Below 15 °C	1991	2020	28	5	9069	88.4
Below 18 °C	1991	2020	28	5	9069	88.4

Quintiles

1991 to 2020 Canadian Climate Normals Element Analytics
Quintiles
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Quintile 1 (Lower Bound)	1991	2020	29	3	9988	98.8
Quintile 1 (Upper Bound)	1991	2020	29	3	9988	98.8
Quintile 2 (Upper Bound)	1991	2020	29	3	9988	98.8
Quintile 3 (Upper Bound)	1991	2020	29	3	9988	98.8
Quintile 4 (Upper Bound)	1991	2020	29	3	9988	98.8
Quintile 5 (Upper Bound)	1991	2020	29	3	9988	98.8

Humidex

1991 to 2020 Canadian Climate Normals Element Analytics
Humidex
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Days with Humidex >= 30	1991	2020	30	1	258806	98.4
Days with Humidex >= 35	1991	2020	30	1	258806	98.4
Days with Humidex >= 40	1991	2020	30	1	258806	98.4

1991 to 2020 Canadian Climate Normals Element Analytics
Humidex Extremes (Normal Period)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Humidex	1991	2020			261108	99.3

1991 to 2020 Canadian Climate Normals Element Analytics
Humidex Extremes (Long-Term)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Humidex	1953	2020			590865	99.1

Wind Chill

1991 to 2020 Canadian Climate Normals Element Analytics
Wind Chill
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Days with Wind Chill < -20	1991	2020	30	1	258909	98.5
Days with Wind Chill < -30	1991	2020	30	1	258909	98.5
Days with Wind Chill < -40	1991	2020	30	1	258909	98.5
Days with Wind Chill < -50	1991	2020	30	1	258909	98.5

1991 to 2020 Canadian Climate Normals Element Analytics
Wind Chill Extremes (Normal Period)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Wind Chill	1991	2020			261211	99.3

1991 to 2020 Canadian Climate Normals Element Analytics
Wind Chill Extremes (Long-Term)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Wind Chill	1953	2020			594302	99.7

Humidity

1991 to 2020 Canadian Climate Normals Element Analytics
Humidity
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Vapour Pressure (kPa)	1991	2020	30	1	258823	98.4
Average Relative Humidity - 0600LST (%)	1991	2020	30	1	10901	99.5
Average Relative Humidity - 1500LST (%)	1991	2020	30	0	10928	99.7

Pressure

1991 to 2020 Canadian Climate Normals Element Analytics
Pressure
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Station Pressure (kPa)	1991	2020	30	1	261879	99.6
Average Sea Level Pressure (kPa)	1991	2020	30	1	258846	98.4

Visibility (hours with)

1991 to 2020 Canadian Climate Normals Element Analytics
Visibility (hours with)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
< 1 km	1991	2020	29	2	249672	99.4
1 to 9 km	1991	2020	29	2	249672	99.4
> 9 km	1991	2020	29	2	249672	99.4

Cloud Amount (hours with)

1991 to 2020 Canadian Climate Normals Element Analytics
Cloud Amount (hours with)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
0 to 2 tenths	1991	2012	18	5	144600	57.6
3 to 7 tenths	1991	2012	18	5	144600	57.6
8 to 10 tenths	1991	2012	18	5	144600	57.6

Frost-Free

1991 to 2020 Canadian Climate Normals Element Analytics
Frost-Free
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Date of Last Spring Frost	1991	2016	17	5	17	65.4
Average Date of First Fall Frost	1991	2016	17	5	17	65.4
Average Length of Frost-Free Period	1991	2016	17	5	17	65.4
Probability of last temperature in spring <= 0°C, on or after (Date)
10 %	1943	2016			64	86.5
25 %	1943	2016			64	86.5
33 %	1943	2016			64	86.5
50 %	1943	2016			64	86.5
66 %	1943	2016			64	86.5
75 %	1943	2016			64	86.5
90 %	1943	2016			64	86.5
Probability of first temperature in fall <= 0°C, on or before (Date)
10 %	1943	2016			64	86.5
25 %	1943	2016			64	86.5
33 %	1943	2016			64	86.5
50 %	1943	2016			64	86.5
66 %	1943	2016			64	86.5
75 %	1943	2016			64	86.5
90 %	1943	2016			64	86.5
Probability of frost-free period equal to or less than indicated period (Days)
10 %	1943	2016			64	86.5
25 %	1943	2016			64	86.5
33 %	1943	2016			64	86.5
50 %	1943	2016			64	86.5
66 %	1943	2016			64	86.5
75 %	1943	2016			64	86.5
90 %	1943	2016			64	86.5

Composite Metadata / Threads

The Climate Normals, Averages, and Extremes are based on Canadian climate composite stations with at least 15 years of data between 1991 and 2020. Composite stations are comprised of one or more stations operated by the Meteorological Service of Canada (MSC) or its partners, where data from individual stations are joined together to create a 30-year data series for a given location. All stations (and associated metadata) used as part of the composite are listed below, alongside the threads used to calculate each Normals/Extremes element.

WHITEHORSE
YUKON TERRITORY

Related Data

Calculation Information Normals Data Element Analytics

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Composite Station Metadata

All stations used in the composite for all Normals and Extremes elements are listed. Station metadata includes station name, station identifiers, coordinates, and elevation.

Composite Station Name: WHITEHORSE

Station Name	Climate ID	WMO ID	TC ID	Latitude	Longitude	Elevation (m)
WHITEHORSE AUTO	2101310	71773	VXY	60°43'59.000" N	135°05'52.000" W	707
WHITEHORSE A	2101300	71964	YXY	60°42'34.200" N	135°04'07.800" W	706.2
WHITEHORSE A	2101303	71964	YXY	60°42'34.000" N	135°04'02.000" W	706.2

Composite Station Threads

Station composites are threaded from the beginning of the Normals period starting in 1991 to the end of 2020, where the predecessor site's data is used until the end of its period of record and is then joined to the current operating site to extend the time series. Threads are generated by climate element for hourly and daily data, and may vary due to differences in station history, instrumentation, meteorological data availability, data quality, or proximity.

Normals and Extremes elements are grouped based on the climate element used in its calculation. Normal period extremes (NPE) are calculated using threads for the 30-year normal period. For long-term (LT) elements and long-term extremes (LTE), the same Normals period threads are extended back in time to the earliest date of data available from the first station used in the data series. These use the 'LTE Start Date' instead of the 'Start Date', that applies to normals period elements and extremes (NPE).

For additional station metadata information, refer to the above section "Composite Station Metadata".

Composite Station Name: WHITEHORSE

Temperature

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Daily Average (°C) Standard Deviation Maximum Daily Mean (°C) (NPE, LTE) Minimum Daily Mean (°C) (NPE, LTE)	DAILY MEAN TEMPERATURE	WHITEHORSE A	2101300	1942/04/01	1991/01/01	2012/10/31
	DAILY MEAN TEMPERATURE	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31
Daily Maximum (°C) Extreme Maximum (°C) (NPE, LTE) Minimum Daily Maximum (°C) (NPE, LTE)	DAILY MAXIMUM TEMPERATURE	WHITEHORSE A	2101300	1942/04/01	1991/01/01	2012/10/31
	DAILY MAXIMUM TEMPERATURE	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31
Daily Minimum (°C) Maximum Daily Minimum (°C) (NPE, LTE) Extreme Minimum (°C) (NPE, LTE)	DAILY MINIMUM TEMPERATURE	WHITEHORSE A	2101300	1942/04/01	1991/01/01	2012/10/31
	DAILY MINIMUM TEMPERATURE	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31

Precipitation

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Rainfall (mm) Extreme Daily Rainfall (mm) (NPE, LTE)	DAILY TOTAL RAINFALL	WHITEHORSE A	2101300	1942/04/01	1991/01/01	2012/12/31
Snowfall (cm) Extreme Daily Snowfall (cm) (NPE, LTE)	DAILY TOTAL SNOWFALL	WHITEHORSE A	2101300	1942/04/01	1991/01/01	2012/12/31
Precipitation (mm) Extreme Daily Precipitation (mm) (NPE, LTE)	DAILY TOTAL PRECIPITATION	WHITEHORSE A	2101300	1942/04/01	1991/01/01	2012/10/31
	DAILY TOTAL PRECIPITATION	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31
Average Snow Depth (cm) Median Snow Depth (cm) Snow Depth at Month-end (cm) Extreme Snow Depth (cm) (NPE, LTE)	SNOW ON GROUND	WHITEHORSE A	2101300	1955/01/01	1991/01/01	2012/10/31
	SNOW ON GROUND	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31

Days With ...

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	Start Date	End Date
Freezing Rain or Freezing Drizzle	DAY WITH FREEZING RAIN	WHITEHORSE A	2101300	1991/01/01	2012/12/02
Freezing Rain or Freezing Drizzle	DAY WITH FREEZING RAIN	WHITEHORSE A	2101303	2012/12/03	2020/12/31
Thunderstorms	DAY WITH THUNDERSTORMS	WHITEHORSE A	2101300	1991/01/01	2012/12/02
Thunderstorms	DAY WITH THUNDERSTORMS	WHITEHORSE A	2101303	2012/12/03	2020/12/31
Hail	DAY WITH HAIL	WHITEHORSE A	2101300	1991/01/01	2012/12/02
Hail	DAY WITH HAIL	WHITEHORSE A	2101303	2012/12/03	2020/12/31
Fog, Ice Fog, or Freezing Fog	DAY WITH FOG OR ICE FOG	WHITEHORSE A	2101300	1991/01/01	2012/12/02
Fog, Ice Fog, or Freezing Fog	DAY WITH FOG OR ICE FOG	WHITEHORSE A	2101303	2012/12/03	2020/12/31
Smoke or Haze	DAY WITH SMOKE/HAZE	WHITEHORSE A	2101300	1991/01/01	2012/12/02
Smoke or Haze	DAY WITH SMOKE/HAZE	WHITEHORSE A	2101303	2012/12/03	2020/12/31

Days with Maximum Temperature

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
<= -30 °C <= -20 °C <= -10 °C <= 0 °C > 0 °C > 10 °C > 20 °C > 30 °C > 35 °C > 40 °C	DAILY MAXIMUM TEMPERATURE	WHITEHORSE A	2101300		1991/01/01	2012/10/31
	DAILY MAXIMUM TEMPERATURE	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31

Days with Minimum Temperature

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
> 20 °C > 10 °C > 0 °C <= 2 °C <= 0 °C < -2 °C < -10 °C < -20 °C < -30 °C < -40 °C	DAILY MINIMUM TEMPERATURE	WHITEHORSE A	2101300		1991/01/01	2012/10/31
	DAILY MINIMUM TEMPERATURE	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31

Days with Rainfall

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
>= 0.2 mm >= 5 mm >= 10 mm >= 25 mm >= 50 mm >= 100 mm	DAILY TOTAL RAINFALL	WHITEHORSE A	2101300		1991/01/01	2012/12/31

Days With Snowfall

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
>= 0.2 cm >= 5 cm >= 10 cm >= 25 cm >= 40 cm	DAILY TOTAL SNOWFALL	WHITEHORSE A	2101300		1991/01/01	2012/12/31

Days with Precipitation

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
>= 0.2 mm >= 1 mm >= 5 mm >= 10 mm >= 25 mm >= 50 mm >= 100 mm	DAILY TOTAL PRECIPITATION	WHITEHORSE A	2101300		1991/01/01	2012/10/31
	DAILY TOTAL PRECIPITATION	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31

Days with Snow Depth

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
>= 1 cm >= 5 cm >= 10 cm >= 20 cm >= 30 cm >= 50 cm >= 100 cm	SNOW ON GROUND	WHITEHORSE A	2101300		1991/01/01	2012/10/31
	SNOW ON GROUND	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31

Wind

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Days with Winds >= 52 km/h	DAY WITH WIND SPEED >= 28 KNOTS	WHITEHORSE A	2101300		1991/01/01	2012/10/31
Days with Winds >= 52 km/h	DAY WITH WIND SPEED >= 28 KNOTS	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31
Days with Winds >= 63 km/h	DAY WITH WIND SPEED >= 34 KNOTS	WHITEHORSE A	2101300		1991/01/01	2012/10/31
Days with Winds >= 63 km/h	DAY WITH WIND SPEED >= 34 KNOTS	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31
Speed (km/h) Extreme Speed (km/h) (NPE, LTE)	WIND SPEED	WHITEHORSE A	2101300	1953/01/01	1991/01/01	2012/11/30
Speed (km/h) Extreme Speed (km/h) (NPE, LTE)	WIND SPEED	WHITEHORSE AUTO	2101310		2012/12/01	2020/12/31
Most Frequent Direction Direction of Extreme Speed (NPE, LTE)	WIND DIRECTION	WHITEHORSE A	2101300	1953/01/01	1991/01/01	2012/11/30
	WIND DIRECTION	WHITEHORSE AUTO	2101310		2012/12/01	2020/12/31
Days with Gusts >= 90 km/h Extreme Gust Speed (km/h) (NPE, LTE)	SPEED OF EXTREME GUST	WHITEHORSE A	2101300	1956/03/01	1991/01/01	2012/10/31
	SPEED OF EXTREME GUST	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31
Direction of Extreme Gust Speed (NPE, LTE)	DIRECTION OF EXTREME GUST	WHITEHORSE A	2101300	1956/03/01	1991/01/01	2012/10/31
Direction of Extreme Gust Speed (NPE, LTE)	DIRECTION OF EXTREME GUST	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31

Degree Days

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Above 24 °C Above 18 °C Above 15 °C Above 10 °C Above 5 °C Above 0 °C Below 0 °C Below 5 °C Below 10 °C Below 15 °C Below 18 °C	DAILY MEAN TEMPERATURE	WHITEHORSE A	2101300		1991/01/01	2012/10/31
	DAILY MEAN TEMPERATURE	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31

Quintiles

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Quintile 1 (Lower Bound) Quintile 1 (Upper Bound) Quintile 2 (Upper Bound) Quintile 3 (Upper Bound) Quintile 4 (Upper Bound) Quintile 5 (Upper Bound)	DAILY TOTAL PRECIPITATION	WHITEHORSE A	2101300		1991/01/01	2012/10/31
	DAILY TOTAL PRECIPITATION	WHITEHORSE AUTO	2101310		2012/11/01	2020/12/31

Humidex

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Days with Humidex >= 30 Days with Humidex >= 35 Days with Humidex >= 40 Extreme Humidex (NPE, LTE)	DEW POINT TEMPERATURE	WHITEHORSE A	2101300	1953/01/01	1991/01/01	2012/11/30
	DEW POINT TEMPERATURE	WHITEHORSE AUTO	2101310		2012/12/01	2020/12/31
	DRY BULB TEMPERATURE	WHITEHORSE A	2101300	1953/01/01	1991/01/01	2012/11/30
	DRY BULB TEMPERATURE	WHITEHORSE AUTO	2101310		2012/12/01	2020/12/31

Wind Chill

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Days with Wind Chill < -20 Days with Wind Chill < -30 Days with Wind Chill < -40 Days with Wind Chill < -50 Extreme Wind Chill (NPE, LTE)	DRY BULB TEMPERATURE	WHITEHORSE A	2101300	1953/01/01	1991/01/01	2012/11/30
	DRY BULB TEMPERATURE	WHITEHORSE AUTO	2101310		2012/12/01	2020/12/31
	WIND SPEED	WHITEHORSE A	2101300	1953/01/01	1991/01/01	2012/11/30
	WIND SPEED	WHITEHORSE AUTO	2101310		2012/12/01	2020/12/31

Humidity

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	Start Date	End Date
Average Vapour Pressure (kPa)	DEW POINT TEMPERATURE	WHITEHORSE A	2101300	1991/01/01	2012/11/30
Average Vapour Pressure (kPa)	DEW POINT TEMPERATURE	WHITEHORSE AUTO	2101310	2012/12/01	2020/12/31
Average Relative Humidity - 0600LST (%) Average Relative Humidity - 1500LST (%)	RELATIVE HUMIDITY	WHITEHORSE A	2101300	1991/01/01	2012/11/30
	RELATIVE HUMIDITY	WHITEHORSE AUTO	2101310	2012/12/01	2020/12/31

Pressure

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	Start Date	End Date
Average Station Pressure (kPa)	STATION PRESSURE	WHITEHORSE A	2101300	1991/01/01	2012/11/30
Average Station Pressure (kPa)	STATION PRESSURE	WHITEHORSE AUTO	2101310	2012/12/01	2020/12/31
Average Sea Level Pressure (kPa)	SEA LEVEL PRESSURE	WHITEHORSE A	2101300	1991/01/01	2012/11/30
Average Sea Level Pressure (kPa)	SEA LEVEL PRESSURE	WHITEHORSE AUTO	2101310	2012/12/01	2020/12/31

Visibility (hours with)

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
< 1 km 1 to 9 km > 9 km	VISIBILITY	WHITEHORSE A	2101300		1991/01/01	2012/12/05
< 1 km 1 to 9 km > 9 km	VISIBILITY	WHITEHORSE A	2101303		2012/12/06	2020/12/31

Cloud Amount (hours with)

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
0 to 2 tenths 3 to 7 tenths 8 to 10 tenths	TOTAL CLOUD AMOUNT	WHITEHORSE A	2101300		1991/01/01	2012/12/05
0 to 2 tenths 3 to 7 tenths 8 to 10 tenths	TOTAL CLOUD AMOUNT	WHITEHORSE A	2101303		2012/12/06	2020/12/31

Frost-Free

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LT Start Date	Start Date	End Date
Average Date of Last Spring Frost Average Date of First Fall Frost Average Length of Frost-Free Period Probability of last temperature in spring <= 0°C, on or after (Date) (LT) Probability of first temperature in fall <= 0°C, on or before (Date) (LT) Probability of frost-free period equal to or less than indicated period (Days) (LT)	DAILY MINIMUM TEMPERATURE	WHITEHORSE A	2101300	1943/01/01	1991/01/01	2012/10/31
	DAILY MINIMUM TEMPERATURE	WHITEHORSE AUTO	2101310		2012/11/01	2016/01/31

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Date modified:: 2024-10-01

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Canadian Climate Normals 1991-2020 Data

Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate Normals
WHITEHORSE

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Canadian Climate Normals 1991-2020 Data

Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate NormalsWHITEHORSE

Composite Station Metadata

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Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate Normals
WHITEHORSE